Table 2. Predicted translation products of SMN circRNAs.

All AUGs resulting in peptides of at least 10 amino acids are reported. The first column gives the circRNA name. Start and stop exons give the location of AUG start codon and UAG/UAA stop codons, respectively. Start position refers to the position of the first nucleotide of AUG within the start exon. Stop position refers to the position of the last nucleotide of UAG/UAA within the stop exon. Peptide length refers to the predicted size in amino acids of the translation product. The last column refers to whether the circRNA ORF contains portions of the primary in-frame SMN ORF. N/A: There is no predicted stop codon, resulting in rolling-circle translation. ∞: Due to rolling-circle translation, the predicted translation product is of indeterminate length.

circRNA	Start exon	Start Position	Stop exon	Stop position	Peptide length	In frame?
C3–4	3	18	3	77	19	No
	3	116	3	172	18	No
	3	191	3	172	111	No
	4	2	3	172	107	No
	4	8	3	172	105	No
	4	29	3	172	98	No
	4	93	3	77	45	No
	4	124	N/A	N/A	∞	Yes
C2B–3–4	2B	14	3	172	92	No
	3	18	3	77	19	No
	3	116	3	172	18	No
	3	191	2B	10	57	No
	4	2	2B	10	53	No
	4	8	2B	10	51	No
	4	29	2B	10	44	No
	4	93	2B	20	26	No
	4	124	N/A	N/A	∞	Yes
C2A–2B–3–4	2A	5	2A	37	10	No
	2A	47	2B	10	11	No
	2B	14	3	172	92	No
	3	18	3	77	19	No
	3	116	3	172	18	No
	3	191	2A	37	66	No
	4	2	2A	37	62	No
	4	8	2A	37	60	No
	4	29	2A	37	53	No
	4	93	2A	8	22	No
	4	124	N/A	N/A	∞	Yes
C5–6	5	17	6	4	27	No
	5	63	6	41	24	No
	6	64	N/A	N/A	α	Yes
	6	75	6	41	57	No
	6	82	N/A	N/A	∞	Yes
	6	109	N/A	N/A	∞	Yes
C6–7–8A	6	64	7	46	32	Yes
	6	75	8A	26	38	No
	6	82	7	46	26	Yes
	6	109	7	46	17	Yes
	8A	27	8A	68	13	No
	8A	139	6	41	14	No
C6–7–8A–9	6	64	7	46	32	Yes
	6	75	8A	26	38	No
	6	82	7	46	26	Yes
	6	109	7	46	17	Yes
	8A	27	8A	68	13	No
	8A	139	6	41	48	No
C6–7–8A–9trl	6	64	7	46	32	Yes
	6	75	8A	26	38	No
	6	82	7	46	26	Yes
	6	109	7	46	17	Yes
	8A	27	8A	68	13	No
	8A	139	7	46	87	Yes
C6–7–8A–10	6	64	7	46	32	Yes
	6	75	8A	26	38	No
	6	82	7	46	26	Yes
	6	109	7	46	17	Yes
	8A	27	8A	68	13	No
	8A	139	10	32	11	No
	10	62	6	41	25	No
	10	83	6	41	18	No
C6–6B–7–8A	6	64	6B	51	32	Yes
	6	75	6B	20	18	No
	6	82	6B	51	26	Yes
	6	109	6B	51	17	Yes
	6B	93	7	46	20	Yes
	8A	27	8A	68	13	No
	8A	139	6	41	48	No
C6–7–8A–9–10	6	64	7	46	32	Yes
	6	75	8A	26	38	No
	6	82	7	46	26	Yes
	6	109	7	46	17	Yes
	8A	27	8A	68	13	No
	8A	139	10	32	45	No
	10	62	6	41	25	No
	10	83	6	41	18	No
C6–7–8A–9trl-10	6	64	7	46	32	Yes
	6	75	8A	26	38	No
	6	82	7	46	26	Yes
	6	109	7	46	17	Yes
	8A	27	8A	68	13	No
	8A	139	10	45	48	No
	10	62	6	41	25	No
	10	83	6	41	18	No